Release events can detail incorrect serviceIDs

[awh]

When the daemon syncs it has the following behaviour:

1. Clone repo and invoke kubectl apply for all resources
2. Determine all services that have changed since the last sync
3. Send a history.EventSync
4. Send a history.EventRelease or history.EventAutoRelease event for every release commit since the last sync

Because the release commit notes do not contain a list of affected service IDs for that specific commit (it just hast the release spec) the daemon includes the list of services affected by the entire sync operation in each event sent in step 4. If the sync contains only one release commit, this is correct; if it contains more than one release commit, it will incorrectly detail that each commit affected the total set of services.